Lots of improvements. Changed documentation install to *work*, using the very nice texi2dvi script from
texinfo, as well as clearing out the cruft much more effectively before and after installation. DVI's are
appropriately placed in /usr/share/doc, and without the .log, .toc, etc cruft...

add INHERITED variable to all eclasses. this keeps track of what eclasses were inherited. e.g. INHERITED='kde-base kde base'. this will allow drobbins to take eclass mtime changes into account when deciding whether to refresh ebuild cache.

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